//package com.mall.filter;
//
//import org.springframework.stereotype.Component;
//import org.springframework.web.filter.OncePerRequestFilter;
//
//import javax.servlet.FilterChain;
//import javax.servlet.ServletException;
//import javax.servlet.http.HttpServletRequest;
//import javax.servlet.http.HttpServletResponse;
//import javax.servlet.http.HttpSession;
//import java.io.IOException;
//@Component
//public class TokenFilter extends OncePerRequestFilter {
//    @Override
//    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
//        HttpSession session = request.getSession(false);
//        if (session != null && session.getAttribute("token") != null) {
//            String token = session.getAttribute("token").toString();
//            request.setAttribute("token", token);
//        }
//        filterChain.doFilter(request, response);
//    }
//}
